package com.hao.netty.chapter04.demo2;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import lombok.extern.log4j.Log4j;

/**
 * @Description
 *  客户端处理Handler
 * @Date 2020/1/12
 * @Author songhao
 **/
@Log4j
public class TimeClientHandler extends ChannelHandlerAdapter {

    private int counter;
    private byte[] req;

    public TimeClientHandler(){
        req = ("QUERY TIME ORDER" + System.getProperty("line.separator")).getBytes();
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        ByteBuf message = null;
        for(int i = 0; i < 100; i++){
            message = Unpooled.buffer(req.length);
            message.writeBytes(req);
            ctx.writeAndFlush(message);
        }
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        String body = (String)msg;
        System.out.println("Now is : " + body + "; the counter is :" + (++counter));
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        //始放资源
        log.warn("Unexpected exception from downstream:" + cause.getMessage());
        ctx.close();
    }
}

